Electric heater.



No. 700,494. Patented May 20, I902.

W. B. HINMAN. ELECTRIC HEATER.

[Application filed Feb. 11, 1901.]

(No Model.)

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UNITED STATES PATENT OFFICE.

WALTER B. HINMAN, OF JOPLIN, MISSOURI, ASSIGNOR OF ONE-HALF TO EDXVARDE. HARRIS, OF JOPLIN, MISSOURI.

ELECTRIC HEATER.

SPECIFICATION forming part of Letters Patent No. 700,494, dated May 20,1902.

Application filed February 11,1901. Serial No. 46,929. (No model.)

1'0 aZl whom iv may concern.-

Be it known that l, XVALTER B. IIINMAN, a citizen of the United States,residing at Joplin, in the county of Jasper and State of Missouri, haveinvented a new and useful Electric Heater, of which the following is aspecification.

This invention relates to electric heaters in general, and moreparticularly to that class particularly adapted for warming beds,although it will be understood that the principles involved may beembodied in a structure for other specific purposes; and the object ofthe invention is to provide a cheap, simple, and e'fficient constructionwherein there will be a minimum of danger of scorchingcontiguousarticles, a further object of the invention being to provide acasing that will be durable and easy of manufacture.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a perspective view of the heater in closed position. Fig. 2is a central longitudinal section of the heater, the iuclosed lamp beingshownin elevation. Fig. 3 is a perspective view showing the casing open.

Referring now to the drawings, the box or casing consists of a bodyportion 5 and a cover or top portion 6, which are similar in form. Thebody consists of a bottom 7, having the side portions and one endportion bent upwardly at right angles and rigidly connectcd by solderingor other means, while the cover consists of an upper plate 8, the sideportions and one end portion of which are bent downwardly at rightangles to form sides 9 and 10 and an end 11, which correspond in allrespects to the sides 12 and 13 and the end 1 1 of the body. This bodyportion and cover portion are formed integral with a web 15, whichconnects the open ends of the body and cover and which when the cover isbrought to lie with the lower edges of its sides and end upon thecorresponding portions of the body stands at right angles to theportions 7 and S and closes the otherwise open rear ends thereof. Thisweb portion has its sides bent upwardly at right angles, and when thecover portion is moved to lie upon the body these upbent sides of theweb lie against the inner faces of the sides of the body and cover. Thecasing is thus formed integral from sheet metal and the web acts asahinge connection between the body and cover. The casing thus formed hasa lining 16 of asbestos or other similar material, and through the sidesof the casing and the lining thereofare formed perforations 17, whichpermit of a circulation of air through the casing.

In the ends 11 and l-l are formed arcuato openings 18 and 19, which whenthe casing is closed cooperate to form an annular opening in the end ofthe casing, and in this annular opening is disposed the stem 20 of anincandescent electric lamp, the bulb of which lies within the casing, asshown in Fig. 2 of the drawings. In placing the lamp the casing isopened, the stem is disposed in one of the arcuate openings, and thecover is then shut down, and to hold the cover in this closed positionspring-catches 21 and 22 are provided. Each of these catches consists ofa wire, which is soldered at one end to the outer face of the end of thebody of the casing, said wire extending upwardly and having its upperend bent at right angles to lie upon the top of the cover, the extremityof this bentover end being turned laterally to project from the side ofthe cover, so that it may be easily grasped to move it from engagementwith the cover.

"With this construction it will be seen that there is provided a heaterthat is simple and cheap of manufacture, that holds the heatingmedium'i. 8., the lamp-firmly in operative position, and to which thelamp may be easily applied and from which it may be aseasily removed forthe substitution of a new lamp. The structure is further rigid anddurable.

Within the casing is disposed a bed 23 of cotton, asbestos, or othersuitable material in a iiufiy'state that will permit of a circu lationof air through it, and this bed acts to yieldably sustain the lamp.

W'hile the present apparatus has been described as a bed-warmer, it willbe of course understood that it may be used for keeping house-plantsfrom freezing or may be used in :tootstools for warming the foot, and itwill.

be understood also that in practice various modifications of thespecific construction shown may be made and that any suitable materialsand proportions may be used for the various parts without departing fromthe spirit of the invention.

What is claimed is A heater comprising a lagged shell or casingConsisting of a body and a cover, each provided in its sides withopenings for the circulation of air, the meeting edges of one end of thebody and of the cover being each provided with a recess, the two formingan opening, a bed of loose filamentous material inclosed by the casingand through which air

